<template>

  <el-container class="home-container">
    <el-header>
      <div>
        <!--        <img src="../assets/logo-small.png" alt=""/>-->
        <span class="spanclass">后台管理系统</span>
      </div>
      <el-button type="primary" @click="logout()">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="collapseVal ? '64px' : '200px' ">
        <div id="" class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu background-color="#333744" text-color="#fff"
                 active-text-color="#409EFF" unique-openeds
                 :collapse="collapseVal"
                 :collapse-transition="false"
                 router
                 :default-active="activePath">
          <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconArr[item.id] "></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id"
                          @click="saveNavState('/'+subItem.path)">
              <i class="el-icon-menu"></i>
              <span>{{subItem.authName}}</span>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  name: 'home',
  data () {
    return {
      menuList: [],
      iconArr: {
        125: 'el-icon-user-solid',
        103: 'el-icon-s-operation',
        101: 'el-icon-s-goods',
        102: 'el-icon-s-order',
        145: 'el-icon-s-platform'
      },
      collapseVal: false,
      activePath: ''
    }
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      } else {
        this.menuList = res.data
      }
    },
    toggleCollapse () {
      this.collapseVal = !this.collapseVal
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>

  .spanclass {
    padding-left: 40px;
  }

  .home-container {
    height: 1000px;
  }

  .el-header {
    height: 100px;
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0px;
    padding-top: 10px;
    align-items: center;
    color: #fff;
    font-size: 20px;

    .span {
      padding-left: 20px;
    }
  }

  .el-aside {
    background-color: #333744;

    .el-menu {
      border-right: none;
    }
  }

  .el-main {
    background-color: #EAEDF1;
  }

  .toggle-button {
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
  }
</style>
